[He doesn't dignify that with a direct response because he knows perfectly well that that's not relevant to the matter at hand. Not really.]

Then what would you have me do, Eggsy? You know what happened. There's likely nothing I can add to the facts of the matter that would shed any further light on my state of mind, even if it was any of your business.

[Which he knows is unkind, but he says it anyway.]